Pentair FNS Plus 48
#5 in D.E.Full review
A grid D.E. filter for an in-ground pool of up to about 46,080 gallons, for owners who want the clearest water and will handle D.E.
Amazon $1,379$1,379
The Pentair FNS Plus 48 rates 3.5 among D.E. pool filters; the Pentair Clean & Clear 100 rates 3.3 among cartridge ones. The Pentair Clean & Clear 100 costs $680 less ($699 vs $1,379).
Pentair Clean & Clear 100
#7 in CartridgeFull review
A slim single-cartridge filter for an in-ground pool of up to about 48,000 gallons. It suits owners who want simple cartridge cleaning from a major maker.
Amazon $699$699
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different type classes (D.E. and cartridge), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Pentair FNS Plus 48 | Pentair Clean & Clear 100 |
|---|---|---|
| Overall rating | 3.5/5 | 3.3/5 |
| Value 35% | 61 $14.36 per gpm ($1,379, 96 gpm) | 76 $6.99 per gpm ($699, 100 gpm) |
| Filter area 30% | 54 48 sq ft of filter area | 0 100 sq ft of filter area |
| Valve 10% | 50 valve type not published (neutral score used) | 100 no backwash valve needed |
| Pressure rating 10% | 100 50 psi maximum working pressure | 100 50 psi maximum working pressure |
| Warranty 15% | 33 1-year warranty | 33 1-year warranty |
Specifications
| Pentair FNS Plus 48 | Pentair Clean & Clear 100 | |
|---|---|---|
| Filtering | ||
| Filter type | D.E. | Cartridge |
| Filter area | 48 sq ft | 100 sq ft |
| Maximum flow | 96 gpm | 100 gpm |
| Largest pool | 46,080 gal | 48,000 gal |
| Pool type | In-ground | In-ground |
| Build | ||
| Tank diameter | 21.5 in | 15.5 in |
| Valve | - | None needed |
| Maximum pressure | 50 psi | 50 psi |
| Ports | - | 2 in |
| Air relief | Yes | Yes |
| Warranty | 1 year | 1 year |